A decade after its inception, the International Conference series on Fuzzy Systems and Data Mining (FSDM) has become established as a mature event. It deals with four main topic groups: a) fuzzy theory, algorithms and systems, b) fuzzy application, c) the interdisciplinary field of fuzzy logic and data mining, and d) data mining. It is a forum for experts, researchers, academics and representatives from industry to share the latest advances in the field of fuzzy sets and data mining. From the outset, the proceedings have formed part of the prestigious book series, Frontiers in Artificial Intelligence and Applications (FAIA), published by IOS Press.

This book contains the papers accepted and presented at the 9th International Conference on Fuzzy Systems and Data Mining (FSDM 2023), held from 10–13 November 2023 in hybrid mode, with most participants gathered in-person in Chongqing, China, and some online. The conference was organized by Chongqing University of Posts and Telecommunications.

All papers were carefully reviewed by members of the international program committee, (listed on unmapped: uri http://www.fsdmconf.org/TPC), and peer-reviewers (listed on unmapped: uri http://www.academicconf.com/reviewerlist?confname=fsdm2023) taking into consideration the breadth and depth of the research topics that fall within the scope of FSDM, focusing not only on the four main topic groups, but also on the themes of two special sessions on granular-ball computing and the application of generative AI, as well as machine learning and neural networks.

FSDM 2023 received 363 submissions, and after a vibrant and vivid discussion stage, 110 papers were accepted by the committee, representing an acceptance rate of just over 30%.

We would like to thank all the speakers and authors for their effort in preparing a contribution for this leading international conference. Moreover, we are very grateful to all those who devoted their time to the evaluation of the papers, especially the reviewers and the members of the program committee. It is also a great honor to continue with the publication of these proceedings in the prestigious FAIA series from IOS Press.

October 2023

Antonio J. Tallón-Ballesteros, Department of Electronics, Computer Systems and Automation Engineering, University of Huelva, Huelva city, Spain

Raquel Beltrán-Barba, Department of Integrated Sciences, University of Huelva, Huelva city, Spain